We apply Slow Feature Analysis (SFA) to image sequences generated from natural images using a range of spatial transformations. An analysis of the resulting receptive fields shows that they have a rich spectrum of invariances and share many properties with complex and hypercomplex cells of the primary visual cortex. Furthermore, the dependence of the solutions on the statistics of the transform...

This paper evaluates a more integrated approach of regulation when doing international comparisons and represents the first cross-country study in the South American region in which quality and weather variables have been included in the analysis. A total of 82 electricity distribution firms operating in Argentina, Brazil, Chile and Peru have been analysed for the period 1998-2008. Stochastic f...

Portions of this paper were presented at the 34th Annual Conference of the Association for Behavior Analysis. Correspondence concerning this article should be addressed to Chris Ninness, School Psychology Doctoral Program, PO Box 13019 SFA Station, Stephen F. Austin State University, Nacogdoches, TX 75962. E-mail: [email protected] Training and deriving Precalculus relaTions: a smallgrouP, Web...

this study empirically examines whether managers manipulate reported income through the timing of sales of long-lived assets and investments. several empirical implications of the income-smoothing and debt-equity hypothesis in the context of asset sales were tested. the findings are consistent with the timing of asset sales by managers so that the recognized accounting income from these sales s...

OBJECTIVE To examine the impact of a government income management program on store sales. DESIGN AND SETTING An interrupted time series analysis of sales data in 10 stores in 10 remote Northern Territory communities during 1 October 2006 to 30 September 2009, which included an 18-month period before income management; a 4-6-month period after the introduction of income management; a 3-month p...

There are a number of measurement instruments in the field of education whose aims are to measure various aspects of educational technology. However, the psychometric properties of such instruments are not always determined, and their use is not always appropriate. The aim of this study was to determine the psychometric properties of the survey of factors affecting teachers teaching with techno...

This paper explores technostress in the context of the professional sales area. This area is unique in that sales professionals prefer to spend time with customers in developing interpersonal relationships, rather than on technology related tasks. At the same time, the modern sales environment requires the use of IS such as sales force automation applications. The sales role also offers increas...

How to improve healthcare system’ efficiency has been highly concerned by Chinese government. The objectives of this paper are to establish production function of medical service and analyze returns to scale; to measure technical efficiency; and to highlight possible policy implications of the results for policy makers. Stochastic Frontier Approach (SFA) is employed in this paper based on data ...